*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.built-in-app{
    width: 350px;
    margin: auto;
}

.built-in-app .nav > li{
    list-style: none;
    display: inline-block;
    position: relative;
    padding: 5px 15px;
    cursor: pointer;
}

.built-in-app .nav > li a{
    color: rgba(45, 18, 13, 0.72);
    text-decoration: none;
}

.built-in-app .nav > li a:hover{
    color: #ff4e06;
}

.built-in-app .nav > .active::after{
    content: "";
    border-bottom: 1px solid #ff4e06;
    position: absolute;
    width: 100%;
    left: 0;
    bottom: -1px;
    color: #ff4e06 !important;
}

.built-in-app .main{
    margin-top: 15px;
}
.built-in-app .main > div{
    display: none;
}
.built-in-app .main > .active{
    display: block;
}

.built-in-app .main > div p,
.built-in-app .main > div span{
    float: left;
    width: 50%;
    display: block;
}

.built-in-app .main > div p{
    color: #ff4e06;
}



